/**
 * @Copyright ®2015 Sinosoft Co. Ltd. All rights reserved.
 * 项目名称 : 网站服务平台
 * 创建日期 : 2016-11-24
 * 修改历史 :
 * 1. [2016-11-24]创建文件 by chenxin
 */
package com.sinosoft.sinopay.service.payrules.biz.util;

/**
 * 【类或接口功能描述】
 * @author chenxin
 * @date 2016-11-24 上午11:21 
 * @version V1.0
 */
public class IPUtil {


   /*
    * 验证IP是否属于某个IP段
    * @param ipSection    IP段（以'-'分隔）
    * @param ip           所验证的IP号码
    */
    public static boolean ipExistsInRange(String ip,String ipSection) {
        ipSection = ipSection.trim();
        ip = ip.trim();
        int idx = ipSection.indexOf('-');
        String beginIP = ipSection.substring(0, idx);
        String endIP = ipSection.substring(idx + 1);
        return getIp2long(beginIP)<=getIp2long(ip) &&getIp2long(ip)<=getIp2long(endIP);
    }

    /**
     * 将ip转换为long类型1
     * @param ip
     * @return
     */
    public static long getIp2long(String ip) {
        ip = ip.trim();
        String[] ips = ip.split("\\.");
        long ip2long = 0L;
        for (int i = 0; i < 4; ++i) {
            ip2long = ip2long << 8 | Integer.parseInt(ips[i]);
        }
        return ip2long;
    }
    /**
     * 将ip转换为long类型2
     * <p>结果同方法1,推荐使用方法1</p>
     * @param ip
     * @return
     */
    public static long getIp2long2(String ip) {
        ip = ip.trim();
        String[] ips = ip.split("\\.");
        long ip1 = Integer.parseInt(ips[0]);
        long ip2 = Integer.parseInt(ips[1]);
        long ip3 = Integer.parseInt(ips[2]);
        long ip4 = Integer.parseInt(ips[3]);
        long ip2long =1L* ip1 * 256 * 256 * 256 + ip2 * 256 * 256 + ip3 * 256 + ip4;
        return ip2long;
    }

    public static void main(String[] args){
        //10.10.10.116 是否属于固定格式的IP段10.10.1.00-10.10.255.255
        String ip="10.10.10.116";
        String ipSection="10.10.1.00-10.10.255.255";
        boolean exists=ipExistsInRange(ip,ipSection);
        System.out.println(exists);
        System.out.println(getIp2long(ip));
        System.out.println(getIp2long2(ip));
    }


}